AP PhotoThis undated file photo provided by Muslim Alliance of North America shows Imam Luqman Ameen Abdullah, imam of the Masjid Al-Haqq mosque in Detroit.A suburban Detroit police department said Thursday that it completed its report on the fatal shooting of a mosque leader by the FBI nearly seven months ago.

Dearborn Police Chief Ron Haddad's statement announcing the report's completion did not indicate whether his investigators believe FBI agents broke any laws when they shot Luqman Ameen Abdullah 20 times while attempting to arrest him on stolen goods charges.

Haddad said the investigation has been sent to the Michigan attorney general's office, which has assigned a special prosecutor to review the case.

The FBI has said Abdullah, 53, fired a gun when agents tried to arrest him at a Dearborn warehouse on Oct. 28 at the conclusion of a sting operation.

Haddad said his investigators interviewed more than 80 people and studied reports on Abdullah's autopsy, the necropsy on an FBI dog that was killed, and the weapons involved in the shootout.

"The Dearborn Police Department will continue to work closely with the attorney general's office on this matter," the police chief said.

Haddad did not immediately respond to a phone message seeking comment. Joy Yearout, a spokeswoman for the attorney general's office, said the main report was received approximately two weeks ago. She declined to disclose any conclusions by Dearborn police.

"Several crucial witnesses agreed to be interviewed and we received their testimonies in the last few days," Yearout said. "At this point the Dearborn investigation is complete and we'll be reviewing the findings. We don't have a timetable."

Special prosecutor Doug Baker also has an FBI report on the shooting.

The FBI says Abdullah was a leader of a radical Sunni group that wants to create an Islamic state within the U.S. His family has denied allegations that he was anti-government.

Eleven allies were indicted in November, with most charged with conspiring to possess and sell stolen goods, from computers to furs.